Fix Microsoft 365 Password Not Working in Outlook or Teams Desktop
Question details
The user's Microsoft 365 password is correct and works in web browsers, but is rejected by desktop applications like Microsoft Outlook and Teams.
- Product
- Microsoft 365, Outlook, Teams
- Device & OS
- macOS / Windows
- Scenario
- Attempting to sign in to Microsoft Office desktop applications using an existing, verified password.
- Observed behavior
- The password authenticates successfully online but fails to log the user into desktop apps, creating a mismatch between browser and local app access.
Ensure you are connected to a stable internet network and verify that you are entering the exact same Microsoft 365 email address and password across all applications.
Clear Cached Microsoft Credentials
Removing stale or corrupted credentials forces the desktop apps to authenticate freshly with Microsoft servers.
Often, local systems store outdated authentication tokens. Clearing these caches forces Outlook and Teams to request a fresh token from the cloud.
Open the 'Keychain Access' app from your Utilities folder, search for 'Microsoft', delete entries related to Office or Teams, and restart your Mac.
Open the Start menu and search for 'Credential Manager'. Go to 'Windows Credentials' and remove any saved credentials containing 'MicrosoftOffice' or 'Teams'.
Relaunch your Outlook or Teams desktop app and sign in using your Microsoft 365 email and password.
Reinstall Microsoft Teams and Repair Office
Outdated or damaged application files can prevent proper password synchronization.
Contact Your Microsoft 365 Administrator
If the issue persists across multiple devices, there may be backend authentication conflicts requiring admin intervention.
Switch to WPS Office for a Hassle-Free Desktop Experience
If Microsoft 365 desktop apps keep rejecting your password or experiencing sync issues, consider switching to WPS Office. It provides a lightweight, highly compatible, and free alternative without complex account authentication hurdles.
Frequently Asked Questions
Why does my password work in Chrome but not in the Outlook app?
Web browsers authenticate directly with cloud servers for each session, while desktop apps rely on local authentication tokens and cached credentials. If the local cache on your computer is corrupted, the desktop app will reject the password even if it is correct.
Will changing my Microsoft 365 password fix the desktop app sync issue?
Sometimes. Changing your password online can force a token refresh across all your devices. However, you may still need to manually clear your local credential cache (like macOS Keychain or Windows Credential Manager) before the desktop apps prompt you for the new password.
Can a password manager cause login issues in Microsoft Teams?
While password managers themselves usually do not cause sync issues, autofilling an incorrect, outdated, or improperly formatted password into the app's prompt can lead to authentication failures. Always ensure your manager is inputting the latest credential data without extra spaces.
How do I clear Microsoft Office credentials on a Mac?
Open the Keychain Access app from your Mac's Utilities folder, search for 'Microsoft Office' and 'Teams', right-click the relevant entries, and select 'Delete'. Restart your Mac and sign into the applications again.
